This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.
Daily listings are sent to bgp-st...@lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith .
Routing Table Report 04:00 +10GMT Sat 19 Jun, 2021
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
BGP routing table entries examined: 854865
Prefixes after maximum aggregation (per Origin AS): 322720
Deaggregation factor: 2.65
Unique aggregates announced (without unneeded subnets): 410094
Total ASes present in the Internet Routing Table: 71458
Prefixes per ASN: 11.96
Origin-only ASes present in the Internet Routing Table: 61456
Origin ASes announcing only one prefix: 25403
Transit ASes present in the Internet Routing Table: 10002
Transit-only ASes present in the Internet Routing Table:321
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 54
Max AS path prepend of ASN ( 48366) 51
Prefixes from unregistered ASNs in the Routing Table: 1081
Number of instances of unregistered ASNs: 1087
Number of 32-bit ASNs allocated by the RIRs: 36367
Number of 32-bit ASNs visible in the Routing Table: 30240
Prefixes from 32-bit ASNs in the Routing Table: 140421
Number of bogon 32-bit ASNs visible in the Routing Table:24
Special use prefixes present in the Routing Table:1
Prefixes being announced from unallocated address space:544
Number of addresses announced to Internet: 3040562176
Equivalent to 181 /8s, 59 /16s and 76 /24s
Percentage of available address space announced: 82.1
Percentage of allocated address space announced: 82.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.5
Total number of prefixes smaller than registry allocations: 285145
APNIC Region Analysis Summary
-
Prefixes being announced by APNIC Region ASes: 229740
Total APNIC prefixes after maximum aggregation: 65604
APNIC Deaggregation factor:3.50
Prefixes being announced from the APNIC address blocks: 225492
Unique aggregates announced from the APNIC address blocks:90146
APNIC Region origin ASes present in the Internet Routing Table: 11650
APNIC Prefixes per ASN: 19.36
APNIC Region origin ASes announcing only one prefix: 3345
APNIC Region transit ASes present in the Internet Routing Table: 1651
Average APNIC Region AS path length visible:4.5
Max APNIC Region AS path length visible: 32
Number of APNIC region 32-bit ASNs visible in the Routing Table: 6824
Number of APNIC addresses announced to Internet: 775044224
Equivalent to 46 /8s, 50 /16s and 60 /24s
APNIC AS Blocks4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-147769
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
Prefixes being announced by ARIN Region ASes:248896
Total ARIN prefixes after maximum aggregation: 113772
ARIN Deaggregation factor: 2.19
Prefixes being announced from the ARIN address blocks: 248952
Unique aggregates announced from the ARIN address blocks:118558
ARIN Region origin ASes present in the Internet Routing Table:18838
ARIN Prefixes per ASN:13.22
ARIN Region
